prom/include/prom_log.h

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/*
 * Copyright 2021 Jens Elkner <jel+libprom@cs.uni-magdeburg.de>.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef PROM_LOG_H
#define PROM_LOG_H

#ifdef PROM_LOG_ENABLE

#include <stdio.h>

typedef enum {
    PLL_NONE = 0,   
    PLL_DBG,        
    PLL_INFO,       
    PLL_WARN,       
    PLL_ERR,        
    PLL_FATAL,      
    PLL_COUNT       
} PROM_LOG_LEVEL;

void prom_log(PROM_LOG_LEVEL level, const char* format, ...);

PROM_LOG_LEVEL prom_log_level(PROM_LOG_LEVEL level);

PROM_LOG_LEVEL prom_log_level_parse(const char *level);

FILE *prom_log_use(FILE *stream);

#define PROM_LOG_PRIV(level, fmt, ...)  \
    prom_log(level, "%s:%d::%s(): " fmt , \
        __FILE__, __LINE__, __func__, __VA_ARGS__);

#define PROM_DEBUG(fmt, ...)    PROM_LOG_PRIV(PLL_DBG, fmt, __VA_ARGS__);

#define PROM_INFO(fmt, ...)     PROM_LOG_PRIV(PLL_INFO, fmt, __VA_ARGS__);

#define PROM_WARN(fmt, ...)     PROM_LOG_PRIV(PLL_WARN, fmt, __VA_ARGS__);

#define PROM_ERROR(fmt, ...)    PROM_LOG_PRIV(PLL_ERR, fmt, __VA_ARGS__);

#define PROM_FATAL(fmt, ...)    PROM_LOG_PRIV(PLL_FATAL, fmt, __VA_ARGS__);

#define PROM_LOG(msg)           PROM_INFO("%s", msg);

#else

#define PROM_DEBUG(fmt, ...)
#define PROM_INFO(fmt, ...)
#define PROM_WARN(fmt, ...)
#define PROM_ERROR(fmt, ...)
#define PROM_FATAL(fmt, ...)
#define PROM_LOG(msg)

#define prom_log(x, fmt, ...)
#define prom_log_level(x) 0
#define prom_log_level_parse(x) 0
#define prom_log_use(x) NULL

#endif  // PROM_LOG_ENABLE

#endif  // PROM_LOG_H